It's possible many ad-supported websites deserve to die... as I see it, they are economic parasites. Advertisers accept bad leads as a cost of doing business, but the cost is simply passed on to consumers.

Many low-quality news papers, TV channels, and magazines died when ad revenue shifted online - consumers did not see enough value to justify the unsubsidized rate. Others survived because consumers saw enough value to pay the higher rates. The internet isn't any different... a large chunk of the internet is spam surviving off of wasteful advertising revenue. Soon, the cruft will die off.

None of us need unlimited access to everything out there, and I don't think it's a sustainable expectation.